linux-kernel - Re: Suspend and resume on ASUS Laptops

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Date:	Fri, 02 Dec 2011 11:09:29 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	Oliver Neukum <oneukum@...e.de>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-pm@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: Suspend and resume on ASUS Laptops

Hi Alan,

On Fri, 2011-12-02 at 10:43 -0500, Alan Stern wrote:

> It's possible that this problem is related to wakeup settings.  Have 
> you tried disabling wakeup for the EHCI controllers?

I'm totally ignorant of the inner workings of suspend to ram and how
devices deal with it. How do I disable wakeup for the EHCI controllers?

Also, does wakeup have anything to do with suspend. As the name
suggests, it sounds like its more of a resume thing. But again, I'm
ignorant when it comes to these matters. I just want to point out that
without the script, the machine never makes it to a suspend state.

> 
> This certainly appears to be some sort of bug in the firmware.  Finding 
> it and working around it isn't likely to be easy.  Unbinding (or 
> unloading) ehci-hcd may indeed be the path of least resistance.

I wounder what windows does. Of course, vendors bend over backwards for
MS, so it may not need to do much, or MS does something completely
different. I do have this still as a dual boot with Windows7. I don't
wipe my boxes clean of windows anymore. If I have to pay the damn MS
tax, I might as well keep what I paid for :-p

-- Steve

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